GEOPY-2110: Add rotated_gradient to 2D inversions

[benk-mira]

GEOPY-2110 - Add rotated_gradient to 2D inversions

[codecov]

Codecov Report

Attention: Patch coverage is 94.73684% with 1 line in your changes missing coverage. Please review.

Project coverage is 90.47%. Comparing base (e06ecea) to head (937b8e9).
Report is 5 commits behind head on develop.

Files with missing lines	Patch %	Lines
simpeg_drivers/utils/regularization.py	94.73%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #207      +/-   ##
===========================================
+ Coverage    90.18%   90.47%   +0.29%     
===========================================
  Files           86       86              
  Lines         5114     5123       +9     
  Branches       660      662       +2     
===========================================
+ Hits          4612     4635      +23     
+ Misses         336      325      -11     
+ Partials       166      163       -3     

Files with missing lines	Coverage Δ
simpeg_drivers/utils/regularization.py	93.25% <94.73%> (+9.48%)	⬆️

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